CS-ToF: High-resolution compressive time-of-flight imaging

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dc.citation.firstpage31096
dc.citation.issueNumber25
dc.citation.journalTitleOptics Express
dc.citation.lastpage31110
dc.citation.volumeNumber25
dc.contributor.authorLi, Fengqiang
dc.contributor.authorChen, Huaijin
dc.contributor.authorPediredla, Adithya
dc.contributor.authorYeh, Chiakai
dc.contributor.authorHe, Kuan
dc.contributor.authorVeeraraghavan, Ashok
dc.contributor.authorCossairt, Oliver
dc.date.accessioned2018-07-02T18:19:42Z
dc.date.available2018-07-02T18:19:42Z
dc.date.issued2017
dc.description.abstractThree-dimensional imaging using Time-of-flight (ToF) sensors is rapidly gaining widespread adoption in many applications due to their cost effectiveness, simplicity, and compact size. However, the current generation of ToF cameras suffers from low spatial resolution due to physical fabrication limitations. In this paper, we propose CS-ToF, an imaging architecture to achieve high spatial resolution ToF imaging via optical multiplexing and compressive sensing. Our approach is based on the observation that, while depth is non-linearly related to ToF pixel measurements, a phasor representation of captured images results in a linear image formation model. We utilize this property to develop a CS-based technique that is used to recover high resolution 3D images. Based on the proposed architecture, we developed a prototype 1-megapixel compressive ToF camera that achieves as much as 4× improvement in spatial resolution and 3× improvement for natural scenes. We believe that our proposed CS-ToF architecture provides a simple and low-cost solution to improve the spatial resolution of ToF and related sensors.
dc.identifier.citationLi, Fengqiang, Chen, Huaijin, Pediredla, Adithya, et al.. "CS-ToF: High-resolution compressive time-of-flight imaging." <i>Optics Express,</i> 25, no. 25 (2017) Optical Society of America: 31096-31110. https://doi.org/10.1364/OE.25.031096.
dc.identifier.doihttps://doi.org/10.1364/OE.25.031096
dc.identifier.urihttps://hdl.handle.net/1911/102328
dc.language.isoeng
dc.publisherOptical Society of America
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.titleCS-ToF: High-resolution compressive time-of-flight imaging
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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